Results 31 to 40 of about 517,038 (215)

Wind Power Short-Term Prediction Based on LSTM and Discrete Wavelet Transform

open access: yesApplied Sciences, 2019
A wind power short-term forecasting method based on discrete wavelet transform and long short-term memory networks (DWT_LSTM) is proposed. The LSTM network is designed to effectively exhibit the dynamic behavior of the wind power time series.
Yao Liu   +6 more
semanticscholar   +1 more source

Comparative analysis of chosen transforms in the context of de-noising harmonic signals [PDF]

open access: yesBiuletyn Wojskowej Akademii Technicznej, 2015
In the article, comparison of popular transforms used i.a. in denoising harmonical signals was presented. The division of signals submitted to mathematical analysis was shown and chosen transforms such as Short Time Fourier Transform, Wigner-Ville ...
Artur Zacniewski
doaj   +1 more source

Non-decimated Wavelet Transform for a Shift-invariant Analysis

open access: yesTrends in Computational and Applied Mathematics, 2018
Due to the ability of time-frequency location, the wavelet transform has been applied in several areas of research involving signal analysis and processing, often replacing the conventional Fourier transform.
Gabriela de Oliveira Nascimento Brassarote   +2 more
doaj   +1 more source

The discrete wavelet transform: wedding the a trous and Mallat algorithms

open access: yesIEEE Transactions on Signal Processing, 1992
Two separately motivated implementations of the wavelet transform are brought together. It is observed that these algorithms are both special cases of a single filter bank structure, the discrete wavelet transform, the behavior of which is governed by ...
M. Shensa
semanticscholar   +1 more source

Classification of Hand Movements based on Discrete Wavelet Transform and Enhanced Feature Extraction

open access: yesInternational Journal of Advanced Computer Science and Applications, 2019
Extraction of potential electromyography (EMG) features has become one of the important roles in EMG pattern recognition. In this paper, two EMG features, namely, enhanced wavelength (EWL) and enhanced mean absolute value (EMAV) are proposed. The EWL and
J. Too, A. Abdullah, N. Saad
semanticscholar   +1 more source

The Time-Scale Interactions between Stock Price and Exchange Rate Volatility in Tehran Stock Exchange [PDF]

open access: yesراهبرد مدیریت مالی, 2018
The purpose of this study was to investigate the relationship between Tehran stock exchange price index and exchange rate changes using the time-scale approach.
ramin khochiany
doaj   +1 more source

COMPARISON COMPRESSION PROPERTIES DWT WITH FB 5/3 AND FB 9/7 [PDF]

open access: yesActa Electrotechnica et Informatica, 2019
The suitability of 2-dimensional Discrete Wavelet Transform (2D DWT) as a tool in image and video compression is nowadays indisputable. Wavelet based techniques such as JPEG2000 for image compression has a lot more to offer than conventional methods in
Ondrej KOVÁČ   +3 more
doaj   +1 more source

Decay properties of the discrete wavelet transform in n dimensions with independent dilation parameters

open access: yesJournal of Inequalities and Applications, 2016
The purpose of this paper is to study the decay properties of the discrete wavelet transform with n independent dilation parameters for functions f in L 2 ( R n ) $L^{2}({ {\mathbb {R}}}^{n})$ and a relationship with its continuity. The method we used to
Jaime Navarro, Oscar Herrera
doaj   +1 more source

A Wavelet-Based Computational Framework for a Block-Structured Markov Chain with a Continuous Phase Variable

open access: yesMathematics, 2023
We consider the computing issues of the steady probabilities for block-structured discrete-time Markov chains that are of upper-Hessenberg or lower-Hessenberg transition kernels with a continuous phase set.
Shuxia Jiang, Nian Liu, Yuanyuan Liu
doaj   +1 more source

A high-performance seizure detection algorithm based on Discrete Wavelet Transform (DWT) and EEG

open access: yesPLoS ONE, 2017
In the past decade, Discrete Wavelet Transform (DWT), a powerful time-frequency tool, has been widely used in computer-aided signal analysis of epileptic electroencephalography (EEG), such as the detection of seizures. One of the important hurdles in the
Duo-jin Chen   +3 more
semanticscholar   +1 more source

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